If somebody came here pretending to be able to specifically name every model to be released in the next 10 years I'd call them a ******* liar.

Amongst other industries that the company I work for supply, Automotive is one... we have tooling on our shelves, bought, paid for and never used... these things can get so far sometimes, and still get changed at the last minute. The model may get shelved, or maybe just the name changed.. but things will change during the evolution of a project. Studies will be commisioned, money will be spent, but at the end of the day, something changing is never more than ONE decision away. The same is true for the way retail products are marketed, until it goes on sale, ANYTHING and EVERYTHING is subject to change..

Guess that didn't happen. What's the latest with the Z1, Z2, Z3, Z4, and Z5 roadmap? I remain unclear on the differences and dates for all of these rumored cars.

Haha, funny.

Things are quite unclear. Main reason is the shift in segments due to price change, a factor of growth.

As SCOTT said, Z1/Z2 might again be RWD. There is a time span between project begin and product sale. I don't know what is the current stand with the Z-line and Toyota cooperation. I'm not sure SCOTT knows a lot more.
I would not expect a whole line of Z cars like we are going to have X cars.

BMW-Toyota are to develop a new modular platform for sports cars. What cars are those exactly is unknown.

Lexus is working on LFA II (no BMW). Lexus is to have the production car of the LF-LC (SC?) that is to be based on new LS platform (no BMW). Toyota want a sports car below GT86, an MR2 replacement. A Supra successor is also considered and coming, desired to not be a hybrid and said to be developed without BMW.

What is BMW and Toyota's target? Especially the price? The BMW is certainly to cost more. But what car exactly? Z4 replacement above or below?

One thing that is important to consider is that the GT86/BRZ might not have any direct replacement. This partnership might be dissolved and Toyota will not have Subaru platform and engine for its GT86 successor. GT86 successor can in future only be a sports car with turbo I4. The question is with hybrid? I think this is where BMW's role comes in. But now the question is when?

Things are quite unclear. Main reason is the shift in segments due to price change, a factor of growth.

As SCOTT said, Z1/Z2 might again be RWD. There is a time span between project begin and product sale. I don't know what is the current stand with the Z-line and Toyota cooperation. I'm not sure SCOTT knows a lot more.
I would not expect a whole line of Z cars like we are going to have X cars.

BMW-Toyota are to develop a new modular platform for sports cars. What cars are those exactly is unknown.

Lexus is working on LFA II (no BMW). Lexus is to have the production car of the LF-LC (SC?) that is to be based on new LS platform (no BMW). Toyota want a sports car below GT86, an MR2 replacement. A Supra successor is also considered and coming, desired to not be a hybrid and said to be developed without BMW.

What is BMW and Toyota's target? Especially the price? The BMW is certainly to cost more. But what car exactly? Z4 replacement above or below?

One thing that is important to consider is that the GT86/BRZ might not have any direct replacement. This partnership might be dissolved and Toyota will not have Subaru platform and engine for its GT86 successor. GT86 successor can in future only be a sports car with turbo I4. The question is with hybrid? I think this is where BMW's role comes in. But now the question is when?

I understand that production cycles take a long time, but we haven't seen any news on the upcoming Z cars other than the 2 or 3 vague references from Scott in the last 12-18 months. The E89 is getting long in the tooth -- its LCI already came and went with negligible changes and we haven't seen any mules for potential Z4/Z5 replacement models out testing whatsoever. No spy pics of Z1/Z2/Z3 mules, either. Are we going to go through the entire F generation without a Z car? If Scott doesn't have clarity on the potential model lineup of the upcoming Z cars, then that means that development is really falling behind.